Din 2391 Precision steel pipe
Name |
din2391 ST35 ST37 ST45 ST52 precision pipe |
Standard |
DIN |
Material |
ST35 ST37 ST45 ST52 |
Size |
Outer diameter:18-168mm Wall thickness:1.5-15mm Length:max13400mm,generally 6000mm or so,can be cut shorter as per your need |
Application |
Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic services. Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes. |
Business scope |
DIN series cold rolled precision seamless steel tubes Related coated and galvanized steel tubes Rustproof phosphyorylated tube |
Main characteric |
No Oxidation Layer on the outer and inner walls; No Leakage under high pressure; No Crake under flating and flattening; No distortion after cold bending; High precision high cleanness; Excellent brightness cold drawn and hot finished Superior performance for high pressure and temperature uses Black finish and hot dip galvanized Excellent corrosion resistance |
The allowed tolerance
| OD(mm) | GB/T3639(GB8713) | DIN2391(EN10305) | Special tolerance | |
| 4mm-30mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.02mm |
| 31mm-40mm | ±0.15mm | ±0.15mm | ±0.05mm | ±0.03mm |
| 41mm-50mm | ±0.20mm | ±0.20mm | ±0.05mm | ±0.03mm |
| 51mm-60mm | ±0.25mm | ±0.25mm | ±0.08mm | ±0.03mm |
| 61mm-70mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| 71mm-160mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| Thickness tolerance | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm |
pipe mechanical properties
| supply state | Product performance index | standard | ||
| T.S. σ b(MPa) | Y.S. σ s(MPa) | elongation δ 5(%) | ||
| BKS (+Sra) | St35(10#) | ≥420 | ≥315 | ≥14 |
| St45(20#) | ≥520 | ≥375 | ≥12 | |
| St52(16Mn) | ≥580 | ≥420 | ≥10 | |
| GBK (+A) | St35(10#) | ≥315 | ≥35 | |
| St45(20#) | ≥390 | ≥32 | ||
| St52(16Mn) | ≥490 | ≥30 | ||
| NBK (+N) | St35(10#) | 340-470 | ≥235 | ≥32 |
| St45(20#) | 440-570 | ≥255 | ≥30 | |
| St52(16Mn) | 490-630 | ≥355 | ≥28 | |
Picture Showcases:
Seamless Steel Pipe mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the Din2391 ST35 ST45 ST52 seamless steel pipe price mechanical properties of the corresponding standard specifies. Seamless Steel Pipe surface quality, appearance, dimensional accuracy Din2391 ST35 ST45 ST52 seamless steel pipe price better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
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Seamless Steel Pipe deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, Din2391 ST35 ST45 ST52 seamless steel pipe price laminating steel plates, etc, so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.